13531201215 has 64 divisors (see below), whose sum is σ = 26211517440. Its totient is φ = 5822668800.

The previous prime is 13531201213. The next prime is 13531201223. The reversal of 13531201215 is 51210213531.

It is not a de Polignac number, because 13531201215 - 2¹ = 13531201213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531201213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 291615 + ... + 334815.

It is an arithmetic number, because the mean of its divisors is an integer number (409554960).

Almost surely, 2^13531201215 is an apocalyptic number.

13531201215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13531201215 is a deficient number, since it is larger than the sum of its proper divisors (12680316225).

13531201215 is a wasteful number, since it uses less digits than its factorization.

13531201215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43392.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 13531201215 its reverse (51210213531), we get a palindrome (64741414746).

The spelling of 13531201215 in words is "thirteen billion, five hundred thirty-one million, two hundred one thousand, two hundred fifteen".